v2.4.0.8
Investments (Details 3) (USD $)
In Thousands, unless otherwise specified
6 Months Ended
Jun. 30, 2013
Dec. 31, 2012
Unconsolidated Subsidiaries    
Carrying Value $ 191,749 $ 121,049
Tax credit partnerships [Member]
   
Unconsolidated Subsidiaries    
Unfunded Commitments 53,555  
Carrying Value 147,200 87,310
Secured debt fund [Member]
   
Unconsolidated Subsidiaries    
Unfunded Commitments 28,400  
Carrying Value 11,637 0
Secured debt fund [Member] | Maximum [Member]
   
Unconsolidated Subsidiaries    
Percentage Ownership 20.00%  
Long equity fund [Member]
   
Unconsolidated Subsidiaries    
Unfunded Commitments 0  
Carrying Value 5,657 0
Long equity fund [Member] | Maximum [Member]
   
Unconsolidated Subsidiaries    
Percentage Ownership 20.00%  
Long/Short equity funds [Member]
   
Unconsolidated Subsidiaries    
Unfunded Commitments 0  
Carrying Value 8,602 17,115
Long/Short equity funds [Member] | Maximum [Member]
   
Unconsolidated Subsidiaries    
Percentage Ownership 20.00%  
Non-public equity funds [Member]
   
Unconsolidated Subsidiaries    
Unfunded Commitments 42,563  
Carrying Value $ 18,653 $ 16,624
Non-public equity funds [Member] | Maximum [Member]
   
Unconsolidated Subsidiaries    
Percentage Ownership 20.00%